24. Prices or
26. Notching involves cutting of small pieces of skin out of the edges of the cars
26. Ground pen is a direct and unavoidable contact between the pig and the flooring,
27. Fan ventilation system uses a fan to maintain the normal temperature inside the pen.
28. Accessibility is to check the availability and cost of foods, water and electricity
29. A tri-square can be used to test the accuracy of the perimeter layout of a hog house
30. The site must be accessible to transportation facilities,​